Question: Which characters of Tosca Are U  carceriere?
Paraphrase: Who of Tosca Are U characters were jailed?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q192941 p:P674 ?s . ?s ps:P674 ?obj . ?s pq:P1705 ?x filter(contains(?x , 'Un carceriere')) }